Eden GeoPower Uses High-Voltage Electricity to Manufacture Low-Cost Hydrogen

Massachusetts-based startup Eden GeoPower is developing a method to produce clean hydrogen by electrically fracturing subterranean rock. The technology aims to shift the industry from hunting for rare natural hydrogen deposits to manufacturing the fuel in situ.

Using a process called Electrical Reservoir Stimulation, the company employs high-voltage electrodes to break subterranean rocks. This creates dense micro-fracture networks within low-permeability, iron-rich formations. Once these networks are established, water is injected into the rock, where it reacts with iron(II) minerals. This chemical reaction oxidizes the iron and releases hydrogen as a byproduct. According to MIT Professor Iwnetim “Tim” Abate, this process effectively turns iron-rich rocks into "chemical reactors buried deep underground."

The Shift to Engineered Hydrogen

While natural geologic hydrogen exists, it occurs in rare accumulations that are difficult to locate and scale for industrial use. Stimulated geologic hydrogen, or engineered hydrogen, seeks to solve this by creating the necessary permeability and reactive surface area on demand. This approach is part of a wider effort involving the US Department of Energy and researchers at MIT to identify carbon-free fuel alternatives that avoid the limitations of traditional production methods.

Economic and Energy Implications

If scalable, this technology could fundamentally alter the economics of clean energy. Eden GeoPower has set a production goal of less than $1 per kilogram of hydrogen. This would significantly undercut the costs associated with green hydrogen produced via electrolysis, which requires massive amounts of electricity, and blue or grey hydrogen, which rely on fossil fuels and emit carbon.

The energy potential is vast; one million tons of geologic hydrogen contains approximately 33 TWh of energy, representing a massive saving in the electricity that would otherwise be required for electrolysis. This efficiency is critical as the International Energy Agency projects that global hydrogen demand will climb to 500 Mt/year by 2050.

The Path Forward

As Eden GeoPower continues to refine its Electrical Reservoir Stimulation, the industry will be watching whether these micro-fracture networks can be maintained at scale and across diverse geological terrains. While the chemical mechanism is established, the transition from experimental stimulation to a commercial-scale "hydrogen factory" remains the primary hurdle. For now, the company's approach offers a potential blueprint for bypassing the high energy costs of the current hydrogen economy.